US914430A - Insecticide. - Google Patents

Description

umran STATES PATENT ora ion JOHN W. LAFER, F CATAWBA ISLAND, OHIO.

INSECTICIDE Specification of Letters Patent.

Patented March 9, 1909.

Application filed September 16, 1907. 8eria1 No. 398 ,048.

Potassium hydroxid oz. Sodium hydroxid 17 oz. Arsenious oxid 20 oz. 'Chlorid' of iron, -(ferric chlorid,

preferred) 1 oz. Lime, unslaked 32 lbs. Sulfur, pulverized preferred 6 lbs.

Water, substantially pure 100 gals.

The aforesaid ingredients are thoroughly mingled by the means of the agitation hereina fter set-forth, so that they will be fully acted upon by each other. v

' To ten ounces of water taken from the one hundred gallons add the .five. ounces of potassium hydroxid and apply heat: to the aforesaid add five ounces ofsodium hydroxid dissolved by ten ounces of water taken from the remaining portion of the one hundred gallons and warmed, and thereafter agitate the same by applying heatto the extent of causing a s low boil: then add twenty ounces of arsenious oxid, substantially pure, and agitate all of. the aforesaid preparation by boiling for ten minutes, and permit the same to cool slowly thereafter: a chemical reaction takes" place from the aforesaid,

wherefrom sodium arsenite and potassium arsenite is'formed: to the aforesaid add one ounce of chlorid of iron solution, preferably ferric chlorid, so that by chemical reaction ferric arsenite will have been formed, and

agitate the preceding preparation by stirring well for a few moments and thereafter permit the sameto stand for a short time and ,then add the followingv preparation.

. Add sufiicient warmed water taken fromthe remaining portion of the one hundred gallons to slake three and three-quarters pounds of fresh unslaked stone lime, substantially pure, whereby will be obtained calcium hydroxid, andto this add six pounds di-sulfid of an approximated amount of twenty-five and sixty-five one-hundredths ounces, and all of which agitate by -boiling,

for about three quarters of an hour, and in the mean time stir the same to keep it in a very plastic state and extract therefrom the liquid which add to the preparation which herein before was permitted to stand for a time: on adding the extracted liquid a chemical reaction takes place wherefrom is produced calcium arsenite to the'approximate amount of two and nine one-hundredths of an ounce which with the ingredients previously described is agitated by thoroughly mixing the same through the means of stirring and in the mean time the remaining portion of the one hundred gallons of water is added thereto,

In using the above described composition, the roots of the plants, shrubs and trees should be preferably'moistened and fed by saturating. the soil, in and about the base thereof, with the same: the composition can be readily applied however to other external portions of the plant or tree and will be absorbed and caused to circulate with the sap by inoculating the same.

By the use of the above described composition, the sap which is inoculated by the ingredientsthereof will cause the various worms, scales and insects to die and. become exterminated through the means of feeding on the same: and is further useful in destroying various disease germs of plants, shrubs and trees and will cause the same to regain, and to remain in a healthy condition.

I am aware that compositions containing some similar ingredients have heretofore been used for external application on plants, shrubs and trees for the purpose of killing disease germs, but I am not aware of the fact that any or all the ingredients of my senite and water, in the described proporcomposition have ever been used together tions. 10 for such a purpose. v In testimony whereof I aflix my signature What I claim, and desire to secure by in presence of two witnesses. 5 Letters Patent of the United States, is- J OHN. W. LAFER.

An insecticide comprising sodium arsen- Witnesses: ite, potassium arsenite, ferric arsenite, cal- U. G. TowNsEN'n,

cium di-sulfid, sodium di-sulfid, calcium ar- V J. V. DAVEY.